Add Redis dependency for aodh

Change-Id: I735d54be98637a601cb7d6e66fa06f5f42e54793
diff --git a/aodh/server/coordination/redis.yml b/aodh/server/coordination/redis.yml
new file mode 100644
index 0000000..e013e0f
--- /dev/null
+++ b/aodh/server/coordination/redis.yml
@@ -0,0 +1,7 @@
+classes:
+- service.redis.server.single
+parameters:
+  aodh:
+    server:
+      coordination_backend:
+        url:  redis://${_param:single_address}:6379/${_param:cluster_node01_address}